Refrigerator shelf



FIG. 1 is a perspective view of a refrigerator shelf showing our ornamental design;

FIG. 2 is a top plan view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 3 is a right side view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 4 is a left side view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 5 is a front view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 6 is a rear view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 7 is a bottom plan view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 8 is a bottom perspective view of the refrigerator shelf embodiment shown in FIG. 1;

FIG. 9 is an enlarged partial view of the refrigerator shelf embodiment shown in FIG. 1; and,

FIG. 10 is another enlarged perspective view of the refrigerator shelf embodiment shown in FIG. 1. 

The ornamental design for a refrigerator shelf, as shown and described. 